The digestive process starts in your mouth when you chew. Chewing breaks the food into pieces while saliva mixes with the food. Once you begin swallowing, the process becomes automatic. Muscles in your esophagus propel food down to your stomach. a Ringlike muscle—called the lower esophageal sphincter, relaxes and lets food pass into the stomach. The stomach produces enzymes and acids and stomach muscles mix food and liquid with digestive juices. Then The stomach slowly empties this semi-fluid composition called chyme into the first section of the small intestine called the duodenum..
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LearningTranscript
00:00The digestive process starts in your mouth when you chew. Chewing breaks the
00:12food into pieces while saliva mixes with food. Once you begin swallowing, the
00:19process becomes automatic. Muscles in your esophagus propel food down to your
00:25stomach. A ring-like muscle called the lower esophageal sphincter relaxes and
00:39lets food pass into the stomach. The stomach produces enzymes and acids and
00:45stomach muscles mix food and liquid with digestive juices. Then the stomach slowly
00:54empties this semi-fluid composition called chyme into the first section of
00:58the small intestine called the duodenum. The pancreas makes enzymes that break
01:04down carbohydrates, fats, and proteins and delivers them to the duodenum through
01:09small tubes called ducts. The liver makes a digestive juice called bile that helps
01:18digest fats and some vitamins and store it in the gallbladder. When you eat, your
01:23gallbladder squeezes bile through the ducts into your duodenum.
01:36The peristalsis actions of the small intestine mix food with digestive juices
01:41and push the mixture forward for further digestion. Water and essential nutrients
01:48pass through the small finger-like projections called veli into the
01:52bloodstream. As peristalsis continues, the waste products of the digestive
01:58process move into the large intestine. More water absorbs here. Bacteria in the
02:09large intestine helps break down remaining nutrients and materials and
02:13changes the waste from the liquid into the stool.
02:24Peristalsis helps move the stool into your rectum.
02:33The anus is the last part of the digestive tract. It is two inches long.
02:40The anus is surrounded by sphincter muscles that are important in allowing
02:45control of stool. It lets you know whether the contents are liquid, gas, or
02:51solid.
03:10you